Add context_utils.h includes where needed.

base/test/test_file_util_android.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/test/test_file_util.h"
 
+#include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/files/file_path.h"
 #include "jni/ContentUriTestUtils_jni.h"
 
 namespace base {
 
 bool RegisterContentUriTestUtils(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 FilePath InsertImageIntoMediaStore(const FilePath& path) {
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jstring> j_path =
       base::android::ConvertUTF8ToJavaString(env, path.value());
   ScopedJavaLocalRef<jstring> j_uri =
       Java_ContentUriTestUtils_insertImageIntoMediaStore(
           env, base::android::GetApplicationContext(), j_path.obj());
   std::string uri = base::android::ConvertJavaStringToUTF8(j_uri);
   return FilePath(uri);
 }
 
 }  // namespace base